diff options
Diffstat (limited to 'src/cpu/intel/haswell')
| -rw-r--r-- | src/cpu/intel/haswell/Kconfig | 8 | ||||
| -rw-r--r-- | src/cpu/intel/haswell/haswell.h | 20 | ||||
| -rw-r--r-- | src/cpu/intel/haswell/smmrelocate.c | 3 |
3 files changed, 31 insertions, 0 deletions
diff --git a/src/cpu/intel/haswell/Kconfig b/src/cpu/intel/haswell/Kconfig index 95d0b18ff2..b49795dd91 100644 --- a/src/cpu/intel/haswell/Kconfig +++ b/src/cpu/intel/haswell/Kconfig @@ -29,6 +29,14 @@ config SMM_TSEG_SIZE hex default 0x800000 +config IED_REGION_SIZE + hex + default 0x400000 + +config SMM_RESERVED_SIZE + hex + default 0x100000 + config MICROCODE_INCLUDE_PATH string default "src/cpu/intel/haswell" diff --git a/src/cpu/intel/haswell/haswell.h b/src/cpu/intel/haswell/haswell.h index a510e7de58..3a5ebe65ae 100644 --- a/src/cpu/intel/haswell/haswell.h +++ b/src/cpu/intel/haswell/haswell.h @@ -100,6 +100,26 @@ #define PSS_LATENCY_TRANSITION 10 #define PSS_LATENCY_BUSMASTER 10 +/* Region of SMM space is reserved for multipurpose use. It falls below + * the IED region and above the SMM handler. */ +#define RESERVED_SMM_SIZE CONFIG_SMM_RESERVED_SIZE +#define RESERVED_SMM_OFFSET \ + (CONFIG_SMM_TSEG_SIZE - CONFIG_IED_REGION_SIZE - RESERVED_SMM_SIZE) + +/* Sanity check config options. */ +#if (CONFIG_SMM_TSEG_SIZE <= (CONFIG_IED_REGION_SIZE + RESERVED_SMM_SIZE)) +# error "CONFIG_SMM_TSEG_SIZE <= (CONFIG_IED_REGION_SIZE + RESERVED_SMM_SIZE)" +#endif +#if (CONFIG_SMM_TSEG_SIZE < 0x800000) +# error "CONFIG_SMM_TSEG_SIZE must at least be 8MiB" +#endif +#if ((CONFIG_SMM_TSEG_SIZE & (CONFIG_SMM_TSEG_SIZE - 1)) != 0) +# error "CONFIG_SMM_TSEG_SIZE is not a power of 2" +#endif +#if ((CONFIG_IED_REGION_SIZE & (CONFIG_IED_REGION_SIZE - 1)) != 0) +# error "CONFIG_IED_REGION_SIZE is not a power of 2" +#endif + #ifndef __ROMCC__ #if defined(__PRE_RAM__) diff --git a/src/cpu/intel/haswell/smmrelocate.c b/src/cpu/intel/haswell/smmrelocate.c index 2a322a7f9a..65ac36388f 100644 --- a/src/cpu/intel/haswell/smmrelocate.c +++ b/src/cpu/intel/haswell/smmrelocate.c @@ -258,6 +258,9 @@ static void fill_in_relocation_params(device_t dev, params->ied_base = tsegmb + params->smram_size; params->ied_size = tseg_size - params->smram_size; + /* Adjust available SMM handler memory size. */ + params->smram_size -= RESERVED_SMM_SIZE; + /* SMRR has 32-bits of valid address aligned to 4KiB. */ params->smrr_base.lo = (params->smram_base & rmask) | MTRR_TYPE_WRBACK; params->smrr_base.hi = 0; |